Qhov txawv ntawm HEC thiab HEMC yog dab tsi?

HEC (Hydroxyethyl Cellulose) thiab HEMC (Hydroxyethyl Methyl Cellulose) yog ob qho tib si polymers tebchaw los ntawm cellulose, ib txwm tshwm sim polysaccharide pom nyob rau hauv cov nroj tsuag. Ob leeg yog siv los ua thickeners, stabilizers, thiab emulsifiers nyob rau hauv ntau yam khoom, nrog rau cov xim thiab coatings, khoom noj khoom haus, tshuaj, tshuaj pleev ib ce, thiab kev lag luam siv.

Qhov sib txawv tseem ceeb ntawm HEC thiab HEMC yog nyob rau hauv lawv cov qauv tshuaj. HEC yog non-ionic cellulose derivative, thaum HEMC yog ib qho ionic cellulose derivative. HEC yog tsim los ntawm ib pawg hydroxyethyl uas txuas nrog cov pob txha cellulose, thaum HEMC yog tsim los ntawm ob pawg hydroxyethyl uas txuas nrog cov pob txha cellulose.

HEC yog cov dej-soluble polymer uas yog siv los ua cov thickening neeg sawv cev ntawm ntau yam khoom, xws li xim & coatings, zaub mov, tshuaj, thiab tshuaj pleev ib ce. Nws yog siv los ua kom cov viscosity ntawm cov khoom, txhim kho nws cov stability, thiab muab ib tug du zoo nkauj. Nws kuj tseem siv los ua emulsifier los pab kom cov khoom sib cais los ntawm kev sib cais.

HEMC kuj yog ib qho dej-soluble polymer uas yog siv los ua cov thickening agent. Nws yog siv rau hauv ntau yam khoom, nrog rau kev tsim kho, khoom noj khoom haus, tshuaj, thiab tshuaj pleev ib ce. Nws yog siv los ua kom cov viscosity ntawm cov khoom, txhim kho nws cov stability, thiab muab ib tug du zoo nkauj. Nws kuj tseem siv los ua emulsifier los pab kom cov khoom sib cais los ntawm kev sib cais.

HEC feem ntau siv rau hauv cov xim thiab cov khoom siv, thaum HEMC feem ntau siv hauv kev tsim kho thiab tshuaj pleev ib ce. HEC muaj txiaj ntsig zoo ntawm kev ua kom cov viscosity ntawm cov khoom ntau dua li HEMC, thiab nws tseem ruaj khov dua hauv cov kua qaub thiab alkaline. HEMC muaj txiaj ntsig zoo ntawm kev muab kev ntxhib los mos rau cov khoom lag luam dua li HEC, thiab nws kuj tseem ruaj khov dua hauv qhov kub thiab txias.

Hauv cov ntsiab lus, qhov sib txawv tseem ceeb ntawm HEC thiab HEMC yog nyob rau hauv lawv cov qauv tshuaj. HEC yog non-ionic cellulose derivative, thaum HEMC yog ib qho ionic cellulose derivative. HEC feem ntau siv rau hauv cov xim & txheej, cov khoom siv tshuaj ntxuav tes, thaum HEMC feem ntau siv hauv kev tsim kho thiab tshuaj pleev ib ce. HEC yog qhov ua tau zoo dua ntawm kev ua kom cov viscosity ntawm cov khoom, thaum HEMC muaj txiaj ntsig zoo dua ntawm kev muab kev ntxhib los mos.